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INVESTMENT SECURITIES (Tables) | 9 Months Ended
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Sep. 30, 2025
INVESTMENT SECURITIES |
Schedule of amortized cost and fair value of securities available-for-sale and securities held-to-maturity | The following tables summarize the amortized cost and fair value of AFS and HTM debt securities and equity investments and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) and gross unrecognized gains and losses recognized in earnings (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Unrealized/ | ​ | Unrealized/ | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrecognized | ​ | Unrecognized | ​ | ​ | ​
At September 30, 2025 |  | Cost |  | Gains |  | Losses |  | Fair Value
Available-for-Sale Securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agency securities | ​ | $ | 40,000 | ​ | $ | — | ​ | $ | (2,148) | ​ | $ | 37,852
U.S. State and Municipal securities | ​ | ​ | 11,224 | ​ | ​ | — | ​ | ​ | (1,584) | ​ | ​ | 9,640
Residential MBS | ​ | ​ | 509,919 | ​ | ​ | 2,567 | ​ | ​ | (53,561) | ​ | ​ | 458,925
Commercial MBS | ​ | ​ | 45,653 | ​ | ​ | 28 | ​ | ​ | (2,063) | ​ | ​ | 43,618
Asset-backed securities | ​ | ​ | 2,478 | ​ | ​ | — | ​ | ​ | (72) | ​ | ​ | 2,406
Total securities available-for-sale | ​ | $ | 609,274 | ​ | $ | 2,595 | ​ | $ | (59,428) | ​ | $ | 552,441
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Held-to-Maturity Securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Treasury securities | ​ | $ | 9,983 | ​ | $ | — | ​ | $ | (74) | ​ | $ | 9,909
U.S. State and Municipal securities | ​ | ​ | 15,130 | ​ | ​ | — | ​ | ​ | (1,794) | ​ | ​ | 13,336
Residential MBS | ​ | ​ | 343,282 | ​ | ​ | — | ​ | ​ | (44,259) | ​ | ​ | 299,023
Commercial MBS | ​ | ​ | 8,052 | ​ | ​ | — | ​ | ​ | (558) | ​ | ​ | 7,494
Total securities held-to-maturity | ​ | $ | 376,447 | ​ | $ | — | ​ | $ | (46,685) | ​ | $ | 329,762
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Equity Investments: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
CRA Mutual Fund | ​ | $ | 5,814 | ​ | $ | — | ​ | $ | (266) | ​ | $ | 5,548
Total equity investment securities | ​ | $ | 5,814 | ​ | $ | — | ​ | $ | (266) | ​ | $ | 5,548
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Unrealized/ | ​ | Unrealized/ | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrecognized | ​ | Unrecognized | ​ | ​ | ​
At December 31, 2024 |  | Cost |  | Gains |  | Losses |  | Fair Value
Available-for-Sale Securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agency securities | ​ | $ | 67,999 | ​ | $ | — | ​ | $ | (4,247) | ​ | $ | 63,752
U.S. State and Municipal securities | ​ | ​ | 11,341 | ​ | ​ | — | ​ | ​ | (1,841) | ​ | ​ | 9,500
Residential MBS | ​ | ​ | 430,968 | ​ | ​ | 854 | ​ | ​ | (68,754) | ​ | ​ | 363,068
Commercial MBS | ​ | ​ | 46,094 | ​ | ​ | — | ​ | ​ | (2,966) | ​ | ​ | 43,128
Asset-backed securities | ​ | ​ | 2,677 | ​ | ​ | — | ​ | ​ | (40) | ​ | ​ | 2,637
Total securities available-for-sale | ​ | $ | 559,079 | ​ | $ | 854 | ​ | $ | (77,848) | ​ | $ | 482,085
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Held-to-Maturity Securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Treasury securities | ​ | $ | 29,938 | ​ | $ | — | ​ | $ | (410) | ​ | $ | 29,528
U.S. State and Municipal securities | ​ | ​ | 15,319 | ​ | ​ | — | ​ | ​ | (1,686) | ​ | ​ | 13,633
Residential MBS | ​ | ​ | 375,232 | ​ | ​ | — | ​ | ​ | (58,866) | ​ | ​ | 316,366
Commercial MBS | ​ | ​ | 8,068 | ​ | ​ | — | ​ | ​ | (876) | ​ | ​ | 7,192
Total securities held-to-maturity | ​ | $ | 428,557 | ​ | $ | — | ​ | $ | (61,838) | ​ | $ | 366,719
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Equity Investments: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
CRA Mutual Fund | ​ | $ | 5,503 | ​ | $ | — | ​ | $ | (394) | ​ | $ | 5,109
Total equity investment securities | ​ | $ | 5,503 | ​ | $ | — | ​ | $ | (394) | ​ | $ | 5,109
Schedule of amortized cost and fair value of debt securities classified by contractual maturity | The tables below summarize, by contractual maturity, the amortized cost and fair value of debt securities. The tables do not include the effect of principal repayments or scheduled principal amortization. Equity securities, primarily investments in mutual funds, have been excluded from the table. Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Held-to-Maturity | ​ | Available-for-Sale
At September 30, 2025 |  | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Due within 1 year | ​ | $ | 9,983 | ​ | $ | 9,910 | ​ | $ | 20,000 | ​ | $ | 19,856
After 1 year through 5 years | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 15,000 | ​ | ​ | 14,129
After 5 years through 10 years | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 4,824 | ​ | ​ | 3,966
After 10 years | ​ | ​ | 15,130 | ​ | ​ | 13,336 | ​ | ​ | 11,400 | ​ | ​ | 9,541
Mortgage-backed and Asset-backed Securities | ​ | ​ | 351,334 | ​ | ​ | 306,516 | ​ | ​ | 558,050 | ​ | ​ | 504,949
Total Securities | ​ | $ | 376,447 | ​ | $ | 329,762 | ​ | $ | 609,274 | ​ | $ | 552,441
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Held-to-Maturity | ​ | Available-for-Sale
At December 31, 2024 |  | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Due within 1 year | ​ | $ | 29,938 | ​ | ​ | 29,527 | ​ | ​ | 38,000 | ​ | ​ | 36,954
After 1 year through 5 years | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 24,999 | ​ | ​ | 23,200
After 5 years through 10 years | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 4,827 | ​ | ​ | 3,713
After 10 years | ​ | ​ | 15,319 | ​ | ​ | 13,633 | ​ | ​ | 11,514 | ​ | ​ | 9,385
Mortgage-backed and Asset-backed Securities | ​ | ​ | 383,300 | ​ | ​ | 323,559 | ​ | ​ | 479,739 | ​ | ​ | 408,833
Total Securities | ​ | $ | 428,557 | ​ | $ | 366,719 | ​ | $ | 559,079 | ​ | $ | 482,085
Schedule of securities with unrealized/unrecognized losses | The following tables present debt securities with unrealized/unrecognized losses aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Less than 12 Months | ​ | 12 Months or More | ​ | Total
​ | ​ | ​ | ​ | ​ | Unrealized/ | ​ | ​ | ​ | ​ | Unrealized/ | ​ | ​ | ​ | ​ | Unrealized/
​ | ​ | Estimated | ​ | Unrecognized | ​ | Estimated | ​ | Unrecognized | ​ | Estimated | ​ | Unrecognized
At September 30, 2025 |  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses
Available-for-Sale Securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agency securities | ​ | $ | — | ​ | $ | — | ​ | $ | 37,852 | ​ | $ | (2,148) | ​ | $ | 37,852 | ​ | $ | (2,148)
U.S. State and Municipal securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 9,640 | ​ | ​ | (1,584) | ​ | ​ | 9,640 | ​ | ​ | (1,584)
Residential MBS | ​ | ​ | 12,696 | ​ | ​ | (70) | ​ | ​ | 247,336 | ​ | ​ | (53,491) | ​ | ​ | 260,032 | ​ | ​ | (53,561)
Commercial MBS | ​ | ​ | 10,797 | ​ | ​ | (17) | ​ | ​ | 23,391 | ​ | ​ | (2,046) | ​ | ​ | 34,188 | ​ | ​ | (2,063)
Asset-backed securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 2,406 | ​ | ​ | (72) | ​ | ​ | 2,406 | ​ | ​ | (72)
Total securities available-for-sale | ​ | $ | 23,493 | ​ | $ | (87) | ​ | $ | 320,625 | ​ | $ | (59,341) | ​ | $ | 344,118 | ​ | $ | (59,428)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Held-to-Maturity Securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Treasury securities | ​ | $ | — | ​ | $ | — | ​ | $ | 9,909 | ​ | $ | (74) | ​ | $ | 9,909 | ​ | $ | (74)
U.S. State and Municipal securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 13,336 | ​ | ​ | (1,794) | ​ | ​ | 13,336 | ​ | ​ | (1,794)
Residential MBS | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 299,023 | ​ | ​ | (44,258) | ​ | ​ | 299,023 | ​ | ​ | (44,258)
Commercial MBS | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 7,494 | ​ | ​ | (558) | ​ | ​ | 7,494 | ​ | ​ | (558)
Total securities held-to-maturity | ​ | $ | — | ​ | $ | — | ​ | $ | 329,762 | ​ | $ | (46,684) | ​ | $ | 329,762 | ​ | $ | (46,684)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Less than 12 Months | ​ | 12 Months or More | ​ | Total
​ | ​ | ​ | ​ | ​ | Unrealized/ | ​ | ​ | ​ | ​ | Unrealized/ | ​ | ​ | ​ | ​ | Unrealized/
​ | ​ | Estimated | ​ | Unrecognized | ​ | Estimated | ​ | Unrecognized | ​ | Estimated | ​ | Unrecognized
At December 31, 2024 |  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses
Available-for-Sale Securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agency securities | ​ | $ | — | ​ | $ | — | ​ | $ | 63,752 | ​ | $ | (4,247) | ​ | $ | 63,752 | ​ | $ | (4,247)
U.S. State and Municipal securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 9,500 | ​ | ​ | (1,841) | ​ | ​ | 9,500 | ​ | ​ | (1,841)
Residential MBS | ​ | ​ | 46,859 | ​ | ​ | (1,104) | ​ | ​ | 258,763 | ​ | ​ | (67,650) | ​ | ​ | 305,622 | ​ | ​ | (68,754)
Commercial MBS | ​ | ​ | 19,624 | ​ | ​ | (410) | ​ | ​ | 23,504 | ​ | ​ | (2,556) | ​ | ​ | 43,128 | ​ | ​ | (2,966)
Asset-backed securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 2,637 | ​ | ​ | (40) | ​ | ​ | 2,637 | ​ | ​ | (40)
Total securities available-for-sale | ​ | $ | 66,483 | ​ | $ | (1,514) | ​ | $ | 358,156 | ​ | $ | (76,334) | ​ | $ | 424,639 | ​ | $ | (77,848)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Held-to-Maturity Securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Treasury securities | ​ | $ | — | ​ | $ | — | ​ | $ | 29,528 | ​ | $ | (410) | ​ | $ | 29,528 | ​ | $ | (410)
U.S. State and Municipal securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 13,633 | ​ | ​ | (1,686) | ​ | ​ | 13,633 | ​ | ​ | (1,686)
Residential MBS | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 316,366 | ​ | ​ | (58,866) | ​ | ​ | 316,366 | ​ | ​ | (58,866)
Commercial MBS | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 7,192 | ​ | ​ | (876) | ​ | ​ | 7,192 | ​ | ​ | (876)
Total securities held-to-maturity | ​ | $ | — | ​ | $ | — | ​ | $ | 366,719 | ​ | $ | (61,838) | ​ | $ | 366,719 | ​ | $ | (61,838)

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